In a joint interview for Rolling Stone magazine, the pop star called the Hey Jude singer Paul "the catalyst for the most fun times ever", as she lamented the fact the COVID pandemic got in the way of a planned joint performance at the Glastonbury festival this summer.

"If this year had gone the way that we thought it was going to go, you and I would have played Glastonbury," she said.

"And I remember thinking it would have been so much fun because the times that I've run into you, I correlate with being some of the most fun nights of my life," Swift went on.

"I was at a party with you, when everybody just started playing music... I was playing (Dave Grohl's Foo Fighters song) Best of You, but I was playing it on piano, and he didn't recognise it until about halfway through," she recalled.

Grohl, who was also at the gathering, joined Taylor on drums, but the Let It Be star admitted that when it comes to impromptu performances, he needs encouragement to get up onstage, noting: "Reese Witherspoon was like, 'Are you going to sing?' I said 'Oh, I don't know.' She said, 'You've got to, yeah!' She's bossing me around."

"I love that person, because the party does not turn musical without that person," said Taylor, adding: "If nobody says, 'Can you guys play music?' we're not going to invite ourselves up onstage at whatever living-room party it is."

"I seem to remember Woody Harrelson got on the piano, and he starts playing Let It Be, and I'm thinking, 'I can do that better'," Paul reflected.